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When the display shows the following cases, that need to be replaced a LCD Inverter:No image on the screen, but the power light stays onDark display but still readableBetween the screen flashes on and off 1/2 to several secondsPower light stays on, but no display and soundNo image on the screen, but LCD TV still has soundPicture cycle on and off, as well as high-power LED lights

Try removing the battery (in case it's shorted), plug in the power adapter and boot to bios (using F2, F10, etc). Be sure there are no USB memory sticks connected, etc. If you are able to boot to bios, great! Then, it's a matter of eliminating the root cause: either battery or hard drive. If you don't boot to bios, then you're most likely facing a hardware problem. It may be as simple as an unplugged cable.
If you can't boot to bios, consider connecting an external monitor to rule out LCD display problems.

Possible that the fault is relative of a faulty LCD DISPLAY. Connect an external monitor and see if the PC works properly . if so the fault is confirmed to be of the LCD. check the voltage to the display, the back light voltage and the cluster cord to the LCD panel. sometimes there can be a break in the hinges, check continuity to confirm. if not the display driver /LCD panel can be suspected.

The MX 5000 and diNovo Media Laser utilize the Adjust Time/Date function on your PC's clock to set the keyboard's LCD display. In order for the PC's clock to synchronize with the LCD display, the SetPoint for Bluetooth software is required to be installed and enabled. Once you have installed SetPoint for Bluetooth, the LCD display will automatically sync with the system's clock.Solution
If your LCD is not displaying the date and time and SetPoint for Bluetooth is not installed:

The backlight is either disconneted or has burned out. I would remove the keyboard and molding and replug the display cable. I think it probably just wiggled loose. Just be careful when you remove the molding so nothing gets broken.

If the screen still is not lighting up then you may have to send the laptop in for repair or replace the LCD yourself.

The applet for WOW launches at the Login screen for WOW. Until
then it will not show up at all in the LCD control panel for the G15

The search you did for WOW is only for the profile which does not do
anything with the LCD. It only handles programming the G-Keys. When the
applet launches it should display "World of Warcraft" in the LCD.
Nothing about the profile launching. That's a different thing.

Even though the applet for WOW is running, it may be disabled in the
G15 software. To check this launch WOW and go to the login screen. Then
go to the G15 LCD Control panel and make sure the box next to the WOW
applet is checked.

Basically, for other software/games which don't have built-in support
for the G-15, you'll need to download a custom LCD applet in order to
display specific software/game info on your LCD when you launch that
software/game. You can find good applet at g15forums.com.